1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-f32-vcvt/avx.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2021 Google LLC
6 //
7 // This source code is licensed under the BSD-style license found in the
8 // LICENSE file in the root directory of this source tree.
9
10 #include <assert.h>
11
12 #include <immintrin.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/unaligned.h>
16 #include <xnnpack/vcvt.h>
17
18
xnn_qu8_f32_vcvt_ukernel__avx_x16(size_t n,const uint8_t * x,float * y,const union xnn_qu8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_qu8_f32_vcvt_ukernel__avx_x16(
20 size_t n,
21 const uint8_t* x,
22 float* y,
23 const union xnn_qu8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
24 {
25 assert(n != 0);
26 assert(n % sizeof(uint8_t) == 0);
27 assert(x != NULL);
28 assert(y != NULL);
29
30 const __m128i vminus_zero_point = _mm_load_si128((const __m128i*) params->avx.minus_zero_point);
31 const __m256 vscale = _mm256_load_ps(params->avx.scale);
32 for (; n >= 16 * sizeof(uint8_t); n -= 16 * sizeof(uint8_t)) {
33 __m128i vx0123 = _mm_cvtepu8_epi32(_mm_cvtsi32_si128((int) unaligned_load_s32(x)));
34 __m128i vx4567 = _mm_cvtepu8_epi32(_mm_cvtsi32_si128((int) unaligned_load_s32(x + 4)));
35 __m128i vx89AB = _mm_cvtepu8_epi32(_mm_cvtsi32_si128((int) unaligned_load_s32(x + 8)));
36 __m128i vxCDEF = _mm_cvtepu8_epi32(_mm_cvtsi32_si128((int) unaligned_load_s32(x + 12)));
37 x += 16;
38
39 vx0123 = _mm_add_epi32(vx0123, vminus_zero_point);
40 vx4567 = _mm_add_epi32(vx4567, vminus_zero_point);
41 vx89AB = _mm_add_epi32(vx89AB, vminus_zero_point);
42 vxCDEF = _mm_add_epi32(vxCDEF, vminus_zero_point);
43
44 const __m256i vx01234567 = _mm256_insertf128_si256(_mm256_castsi128_si256(vx0123), vx4567, 1);
45 const __m256i vx89ABCDEF = _mm256_insertf128_si256(_mm256_castsi128_si256(vx89AB), vxCDEF, 1);
46
47 __m256 vy01234567 = _mm256_cvtepi32_ps(vx01234567);
48 __m256 vy89ABCDEF = _mm256_cvtepi32_ps(vx89ABCDEF);
49
50 vy01234567 = _mm256_mul_ps(vy01234567, vscale);
51 vy89ABCDEF = _mm256_mul_ps(vy89ABCDEF, vscale);
52
53 _mm256_storeu_ps(y, vy01234567);
54 _mm256_storeu_ps(y + 8, vy89ABCDEF);
55 y += 16;
56 }
57 for (; n >= 4 * sizeof(uint8_t); n -= 4 * sizeof(uint8_t)) {
58 __m128i vx = _mm_cvtepu8_epi32(_mm_cvtsi32_si128((int) unaligned_load_s32(x)));
59 vx = _mm_add_epi32(vx, vminus_zero_point);
60 x += 4;
61
62 __m128 vy = _mm_cvtepi32_ps(vx);
63 vy = _mm_mul_ps(vy, _mm256_castps256_ps128(vscale));
64
65 _mm_storeu_ps(y, vy);
66 y += 4;
67 }
68 if XNN_UNLIKELY(n != 0) {
69 assert(n >= 1 * sizeof(uint8_t));
70 assert(n <= 3 * sizeof(uint8_t));
71
72 __m128i vx = _mm_cvtepu8_epi32(_mm_cvtsi32_si128((int) unaligned_load_s32(x)));
73 vx = _mm_add_epi32(vx, vminus_zero_point);
74
75 __m128 vy = _mm_cvtepi32_ps(vx);
76 vy = _mm_mul_ps(vy, _mm256_castps256_ps128(vscale));
77
78 if (n & (2 * sizeof(uint8_t))) {
79 _mm_storel_pi((__m64*) y, vy);
80 vy = _mm_movehl_ps(vy, vy);
81 y += 2;
82 }
83 if (n & (1 * sizeof(uint8_t))) {
84 _mm_store_ss(y, vy);
85 }
86 }
87 }
88